Impressive! Thank you for sharing this!
Looks like just the thing I hope to accomplish with my heating system. I want to track
energy “produced” and energy “consumed”. See this thread if you like: Calculate energy consumption used for heating from hot water storage tanks? - #9 by Ih8rain2
Thing is that it seems that I need to know the flow, and the manufacturers of the pumps aren’t that helpful, and the flow will ofc vary, depending on several factors.
So I figured I would like to install flow meters and get their data, then I found your brilliant project here.
What kind of hardware do you have? The thing I struggle with is to find flow meters that will fit my existing pipes (pipes will have to be cut ofc), withstand heat up to ~90°C AND be able to solder to some kind of ESPHome micro controller.